February 02, 2005
New roads can cause congestion
Kate Ravilious in New Scientist:
Traffic should flow best in cities when only a limited number of roads lead to the centre. This counter-intuitive finding could allow planners to prevent gridlock by closing roads rather than building new ones.
It comes from a new way of thinking about complex networks developed by Neil Johnson, Douglas Ashton and Timothy Jarrett at the University of Oxford, UK. The researchers began by approximating a complex city network to just a ring road and a number of the arterial roads that cross at the centre.
They then worked out how the average time for journeys changes as the number of roads increases.
More here.
Posted by Abbas Raza at 05:17 PM | Permalink
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